The proper condition of hydrolipid mantle and the stratum corneum intercellular\nmatrix determines effective protection against transepidermal water loss (TEWL). Some\nchemicals, improper use of cosmetics, poor hygiene, old age and some diseases causes\ndisorder in the mentioned structures and leads to TEWL increase. The aim of this study\nwas to obtain the optimal formulation composition of an oiling bath cosmetic based on\nrapeseed phospholipids and vegetable oil with high content of polyunsaturated fatty acids.\nIn this work, the composition of oiling bath form was calculated and the degree of oil\ndispersion after mixing the bath preparation with water was selected as the objective\nfunction in the optimizing procedure. The full factorial design 23 in the study was used.\nThe concentrations of rapeseed lecithin ethanol soluble fraction (LESF), alcohol (E) and\nnon-ionic emulsifier (P) were optimized. Based on the calculations from our results,\nthe optimal composition of oiling bath cosmetic was: L (LESF) 5.0 g, E (anhydrous\nethanol) 20.0 g and P (Polysorbate 85) 1.5 g. The optimization procedure used in the study\nOPEN ACCESS allowed to obtain the oiling bath cosmetic which gives above 60% higher emulsion\ndispersion degree 5.001 Ã?â?? 105 cm1 compared to the initial formulation composition with\nthe 3.096 Ã?â?? 105 cm1.
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